1. Uninstall Old Java Versions Sccm
2. Java Uninstall Previous Versions

Jun 28, 2017  We have a need to use an old version of JAVA due to incompatibility with some apps.I have scoured the www for a way to run th. Java Silent Uninstall. By andrewsmith30. This method work only for Java 8 Update 40 and below versions. Because Java change the msi procedures. Keeping old versions of Java on your system presents a serious security risk. Uninstalling older versions of Java from your system ensures that Java applications will run with the latest security and performance improvements on your system. How can I remove older versions of Java? Windows users can safely uninstall older versions of Java: when. # which java /usr/bin/java I am not sure how the old one was deployed – Programmer Apr 30 '15 at 9:34 1 How to install software is not a programming question.

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I have a Linux box on which Java 1.7 is installed:

But for some new tool I need to install the jdk-8u45-linux-x64.tar.gz

So how can I remove old one and install the new one?

ProgrammerProgrammer

3 Answers

1. To remove OpenJDK (the one you've already installed)

   sudo apt-get purge openjdk-*

2. Make a new directory for your new JDK

   sudo mkdir -p /usr/local/java

3. Copy the file to the directory (you should be in that file path)

   sudo cp -r jdk-8u45-linux-x64.tar.gz /usr/local/java/

4. Extract the file

   sudo tar xvzf jdk-8u45-linux-x64.tar.gz

5. You should add this to your PATH now. To do that:

   a. Open /etc/profile : sudo gedit /etc/profile

   b. Scroll down (the end) and add the path where your jdk was installed

   JAVA_HOME=/usr/local/java/jdk1.8.0_45PATH=$PATH:$HOME/bin:$JAVA_HOME/binexport JAVA_HOMEexport PATH

   Save and exit

6. Inform your Linux system where your Oracle Java JDK/JRE is located.

   a. Notify the system that Oracle Java JRE is available for use

   sudo update-alternatives --install '/usr/bin/java' 'java' '/usr/local/java/jdk1.8.0_45/bin/java' 1

   b. Notify the system that Oracle Java JDK is available for use

   sudo update-alternatives --install '/usr/bin/javac' 'javac' '/usr/local/java/jdk1.8.0_45/bin/javac' 1

   c. Notify the system that Oracle Java Web start is available for use

   sudo update-alternatives --install '/usr/bin/javaws' 'javaws' '/usr/local/java/jdk1.8.0_20/bin/javaws' 1

7. Inform your Linux system that Oracle Java JDK/JRE must be the default Java.

   a. Set the java runtime environment for the system

   sudo update-alternatives --set java /usr/local/java/jdk1.8.0_45/bin/java

   b. Set the javac compiler for the system

   sudo update-alternatives --set javac /usr/local/java/jdk1.8.0_45/bin/javac

   c. Set Java Web start for the system

   sudo update-alternatives --set javaws /usr/local/java/jdk1.8.0_20/bin/javaws

8. Reload your system wide PATH

   source /etc/profile

9. Check the new version and you're done!

   java -version

Just unpack the new Java version, for example into /opt. Then do

Put these exports into the startup files for your shell and you should be set. It is not necessary to uninstall the Java 7 installation.

Uninstall Old Java Versions Sccm

On Centos/Redhat

First do : rpm -qa|grep jdkAnd then : rpm -e <the version which you dont want>

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Java Uninstall Previous Versions

all I have installed both JDK 1.7 update 21(1.7.0.210) and 51(1.7.0.510), and so I wonder do I need to uninstall the older version which is JDK 1.7 update 21, as they both show up in the list of Programs and Features on Windows. Second, I tried Java Uninstall Tool, it only reports There are no older versions of Java on your computer. So I wonder can I just use the Programs and Features that manually uninstall any version of Java if I need to.

Another question is that I am using Eclipse doing Java and Android programming, so I wonder if I remove the older version of Java, will it affect the compiler settings in Eclipse, since Eclipse is kinda automatically detects your JDK versions and hence sets Compiler compliance level in Preferences.

cheers

daiyuedaiyue

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